Assertion '(unsigned) data.input_frames_used == in_n_frames' failed at pulsecore/resampler.c:1284, function libsamplerate_resample(). Aborting.

[David Nielsen]

I have started seeing pulseaudio abort on Koala with the following message:

E: resampler.c: Assertion '(unsigned) data.input_frames_used == in_n_frames' failed at pulsecore/resampler.c:1284, function libsamplerate_resample(). Aborting.
Aborted

The abort occures whenever I attempt to play a file

reproduce:
1) pulseaudio -k && pulseaudio -vvvv
2) play file

pulseaudio:
  Installeret: 1:0.9.14-0ubuntu20
  Kandidat: 1:0.9.14-0ubuntu20
  Versionstabel:
 *** 1:0.9.14-0ubuntu20 0
        500 http://archive.ubuntu.com karmic/main Packages
        100 /var/lib/dpkg/status

[David McBride (david-mcbride)]

I am also having this problem on a machine I upgraded from Jaunty to Karmic today (Mon May 18th); log from PulseAudio -vvvv attached.

The bug does not always trigger; when playing audio from Banshee, approximately one attempted track playback in 10 will succeed.

This is a regression from Jaunty.

This also impacts Flash playback in Firefox, and can lead to Flash crashing the browser.

[Dave Gilbert (ubuntu-treblig)]

I saw the same thing today.
pulseaudio 1:0.9.15-1ubuntu3

It seems to have restarted and be working after that though. This is was first thing played (with rhythmbox) after a resume. This is on intel audio with options snd-hda-intel position_fix=2

From user.log:

May 24 12:03:09 davros pulseaudio[6418]: resampler.c: Assertion '(unsigned) data.input_frames_used == in_n_frames' failed at pulsecore/resampler.c:1302, function libsamplerate_resample(). Aborting.
May 24 12:03:09 davros pulseaudio[9524]: pid.c: Stale PID file, overwriting.
May 24 12:03:11 davros pulseaudio[9524]: alsa-sink.c: ALSA woke us up to write new data to the device, but there was actually nothing to write!
May 24 12:03:11 davros pulseaudio[9524]: alsa-sink.c: Most likely this is a bug in the ALSA driver 'snd_hda_intel'. Please report this issue to the ALSA developers.
May 24 12:03:11 davros pulseaudio[9524]: alsa-sink.c: We were woken up with POLLOUT set -- however a subsequent snd_pcm_avail() returned 0 or another value < min_avail.

[David McBride (david-mcbride)]

Commenting out the line :

resample-method = src-linear

... in /etc/pulse/daemon.conf, and restarting, results in crash-free pulseaudio.

Cheers,
David

[Dave Gilbert (ubuntu-treblig)]

I commented that out and it doesn't seem to have helped much,
but I also changed default-sample-rate to 48000 and that's made a big difference.

Dave

[Rene Jablonski (son-riab)]

Thank you Dave!

Commenting out default-sample-rate = 48000 helps a lot.

Rene

[Daniel van Vugt (vanvugt)]

Thank you for reporting this bug to Ubuntu.
Ubuntu 9.10 (karmic) reached end-of-life on April 30, 2011.

See this document for currently supported Ubuntu releases:
https://wiki.ubuntu.com/Releases

Please upgrade to the latest version and re-test.

[Launchpad Janitor (janitor)]

[Expired for pulseaudio (Ubuntu) because there has been no activity for 60 days.]